As many as 27 people, including the gunman, were killed Friday morning when a man opened fire at Sandy Hook Elementary School, according to reports. Ossining police Capt. Scott Craven went to schools in the Ossining Union Free School District to provide support and comfort to families, Ossining school officials said. Briarcliff Manor school district officials confirmed that members of the Briarcliff Police Department were on hand at Todd Elementary School.

"Our hearts and sympathies are extended to all,” Phyllis Glassman, superintendent of the Ossining school district, said in a statement Friday. “Please know that in the Ossining School District and the greater Ossining Community, we have been proactive in order to protect our students, staff, and community at large.”

Glassman said she had been in contact with representatives of the Board of Cooperative Educational Services, and district officials would address the incident further beginning next week.

“As always, and next week in particular, our principals will once again review their School Emergency Plans with their School Emergency Response Teams to reinforce our vigilance in protecting our students and staff as well as ensuring high levels of safety and security,” she said in the statement. “As partners in protection of everyone in our schools and community, we thank you, too, for your efforts relative to safety and security.”

Neal Miller, superintendent of the Briarcliff Manor Union Free School District, said he was “extremely saddened” when hearing the news coming out of Connecticut.

“It’s absolutely unthinkable and horrific, and we’re all affected when something like this happens,” Miller said. “It makes everyone extremely uneasy even though it was an isolated incident, and so we had our security personnel on high alert.”

Miller said he was thankful that the Briarcliff Manor Police Department provided an officer at Todd School.

“We’re doing whatever we can to help people feel more secure,” he said. “We know it’s an isolated incident, but we want to be vigilant. All of our entrances are manned by security personnel every day, and we typically do a nice job of security, but with incidents like this it’s important to maintain that kind of vigilance.”